PMID: 7436662Jun 1, 1980Paper

Change in chemical composition of membrane of Bacillus caldotenax after shifting the growth temperature

Archives of Microbiology
Y HasegawaY Nosoh


Membranes from Bacillus caldotenax contain neutral lipids and phospholipids such as phosphatidyl-ethanolamine, phosphatidyl glycerol and cardiolipin. Each of the lipids has almost the same fatty acid composition. When the growth temperature decreases, not only the fatty acid composition but also the lipid composition changes such that the membrane fluidity increases, and the composition of membrane-bound proteins also changes. On shifting the growth temperature from 65 degrees to 45 degress C, the bacterium grows immediately with a doubling time at 45 degrees C, but the compositions of proteins and lipids in membranes gradually change and reach the compositions typical of cells growing at 45 degrees C one doubling time after the temperature shift, respectively. It is concluded that the change in chemical composition of membrane of the bacterium on the temperature shift from 65 degrees to 45 degrees C is not prerequisite for growth at 45 degrees C.


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Aug 1, 1959·Canadian Journal of Biochemistry and Physiology·E G BLIGH, W J DYER
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